%0 Journal Article %A R. G. Kostyanovsky %T Reaction of ethylenimine with carbonyl compounds %J Doklady Akademii Nauk %D 1961 %P 877-879 %V 139 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_139_4_a27/ %G ru %F DAN_1961_139_4_a27